Mixing color is related with a secondary element such as water or oil. Water & oil are both a common media to mixing color to their density. Its determines the nature, action or application of a color on a surface or third media like canvas or paper. To create a galaxy like effect of color mix is easy to create with watercolor.

Steps

1

Take a black paper and apply a thin layer of water on it.

2

Take a large plate (size of your canvas) & fill it with water.

3

Apply some drops of coconut oil on it & stir the water slowly with a spoon.

4

Take some thick blue color & mix it with water firmly.

5

Apply couple of drops of blue color mix on the plate filled with water & oil.

6

As you drop the blue color, it will flow within the water & oil. It would not mix with the water as oil would not allow to dissolve. This would create some random wonderful cyclic patterns on the surface of the water in the plate.

7

With paper clip, face down the black paper on the surface of the plate & quickly take it out as, it will create the random mark of blue color on the paper which was on the surface of the water plate.

8

After drying, apply other relative colors or add different colors in the water to see more random mixing patterns.

9

After paper is half dry, apply white watercolor by dropping on the paper from different heights.

10

Use your brush to spray come other color on the paper to create effects.